@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #0f0f0f;
  --surface: #161616;
  --surface-2: #1c1c1c;
  --border: #262626;
  --border-2: #303030;

  --text: #efefef;
  --text-muted: #888888;
  --text-dim: #4a4a4a;

  --accent: #f5f0e8;
  --accent-dim: rgba(245, 240, 232, .06);

  --green: #b8b8b8;
  --green-dim: rgba(184, 184, 184, .06);
  --red: #707070;
  --red-dim: rgba(112, 112, 112, .06);
  --yellow: #686868;
  --yellow-dim: rgba(104, 104, 104, .06);
  --blue: #a0a0a0;
  --blue-dim: rgba(160, 160, 160, .06);
  --magenta: #8a8a8a;
  --magenta-dim: rgba(138, 138, 138, .06);
  --orange: #999999;
  --orange-dim: rgba(153, 153, 153, .06);

  --font: 'IBM Plex Mono', 'JetBrains Mono', 'Fira Code', 'Cascadia Code', ui-monospace, monospace;
  --radius: 2px;
  --radius-lg: 2px;
  --header-h: 48px;
  --transition: 100ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 13px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
}

button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
  outline: none;
}

input,
select,
textarea {
  font-family: var(--font);
  color: var(--text);
}

/* ── Header ─────────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
}

.header__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header__logo {
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: #0f0f0f;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 600;
  flex-shrink: 0;
}

.header__title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.header__title span {
  color: var(--text-dim);
}

.header__network {
  font-size: 10px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 2px 6px;
  letter-spacing: 0.5px;
}

/* ── Header Nav (Provider / Client buttons) ─────────────────── */
.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header__nav-btn {
  font-size: 11px;
  font-family: var(--font);
  font-weight: 500;
  color: #888;
  text-decoration: none;
  padding: 5px 16px;
  border: 1px solid var(--border-2);
  background: var(--surface);
  cursor: pointer;
  transition: color 80ms ease, background 80ms ease, border-color 80ms ease;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: inline-block;
  line-height: 1;
}

.header__nav-btn:hover {
  color: var(--text);
  background: var(--surface-2);
  border-color: #484848;
}

.header__nav-btn--active {
  color: var(--text);
  background: var(--surface-2);
  border-color: #555;
}

/* ── Header Right ───────────────────────────────────────────── */
.header__right {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

/* ── Balance Chips ──────────────────────────────────────────── */
.wallet-balances {
  display: flex;
  align-items: center;
  gap: 6px;
}

.wallet-balance-chip {
  font-size: 11px;
  font-family: var(--font);
  color: var(--text-muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 3px 8px;
  letter-spacing: 0.02em;
}

.wallet-balance-chip--dim {
  opacity: 0.4;
}

/* ── Wallet Button ──────────────────────────────────────────── */
.wallet-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  background: transparent;
  border: 1px solid var(--border-2);
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--font);
  transition: all var(--transition);
}

.wallet-btn:hover {
  border-color: var(--text-dim);
  color: var(--text);
}

.wallet-btn--connected {
  border-color: rgba(240, 236, 228, .2);
  color: var(--accent);
}

.wallet-btn--connected:hover {
  border-color: rgba(245, 240, 232, .4);
}

.wallet-btn__dot {
  width: 6px;
  height: 6px;
  background: var(--text-dim);
  border-radius: 50%;
  flex-shrink: 0;
}

.wallet-btn--connected .wallet-btn__dot {
  background: var(--text-muted);
}

.wallet-btn__address {
  font-size: 11px;
}

/* ── Wallet Dropdown ─────────────────────────────────────────── */
.wallet-wrap {
  position: relative;
}

.wallet-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border-2);
  min-width: 160px;
  z-index: 500;
}

.wallet-dropdown__item {
  display: block;
  width: 100%;
  padding: 9px 14px;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--font);
  cursor: pointer;
  transition: background 80ms ease, color 80ms ease;
}

.wallet-dropdown__item:hover {
  background: var(--surface-2);
  color: var(--text);
}

.wallet-dropdown__item--danger:hover {
  color: #ff5555;
}

.wallet-dropdown__divider {
  height: 1px;
  background: var(--border);
}

/* ── Route Loading ──────────────────────────────────────────── */
.route-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

/* ── Layout ─────────────────────────────────────────────────── */
.main {
  padding: 24px 20px 64px;
}

.main__inner {
  max-width: 600px;
  margin: 0 auto;
}

/* ── Empty state ────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  text-align: center;
}

.empty-state__icon {
  font-size: 28px;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.empty-state__title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.empty-state__text {
  font-size: 12px;
  color: var(--text-dim);
  max-width: 340px;
  line-height: 1.7;
}

/* ── Toolbar ────────────────────────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.toolbar__left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toolbar__title {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.toolbar__count {
  font-size: 11px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 1px 6px;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-family: var(--font);
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: transparent;
  border: 1px solid var(--text-dim);
  color: var(--text);
}

.btn--primary:hover {
  background: rgba(245, 240, 232, .04);
}

.btn--ghost {
  background: transparent;
  border: 1px solid var(--border-2);
  color: var(--text-muted);
}

.btn--ghost:hover {
  border-color: var(--text-dim);
  color: var(--text);
}

.btn--danger {
  background: transparent;
  border: 1px solid #772222;
  color: #ff5555;
}

.btn--danger:hover {
  background: rgba(255, 85, 85, .08);
}

.btn--success {
  background: transparent;
  border: 1px solid rgba(245, 240, 232, .25);
  color: var(--text-muted);
}

.btn--success:hover {
  background: transparent;
}

.btn--warning {
  background: transparent;
  border: 1px solid var(--border-2);
  color: var(--text-muted);
}

.btn--warning:hover {
  background: rgba(245, 240, 232, .04);
}

.btn--sm {
  padding: 3px 8px;
  font-size: 11px;
}

.btn--full {
  width: 100%;
  justify-content: center;
  padding: 10px;
}

.btn__icon {
  font-size: 14px;
  line-height: 1;
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ── Escrow List ────────────────────────────────────────────── */
.escrow-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.escrow-list__empty {
  border: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-dim);
  font-size: 12px;
  line-height: 1.7;
}

.escrow-list__empty strong {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.escrow-list__loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 40px 24px;
  color: var(--text-dim);
  font-size: 12px;
}

/* ── Escrow Card ────────────────────────────────────────────── */
.escrow-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 12px 14px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px 16px;
  align-items: start;
  transition: border-color var(--transition);
}

.escrow-card:hover {
  border-color: var(--border-2);
}

.escrow-card__body {
  min-width: 0;
}

.escrow-card__top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.escrow-card__pda {
  font-size: 11px;
  color: var(--text-dim);
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 1px 6px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.5px;
  white-space: nowrap;
  border: 1px solid currentColor;
}

.badge__dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.badge--unaccepted {
  color: #555555;
  border-color: #333333;
}

.badge--accepted {
  color: var(--text-muted);
}

.badge--overdue {
  color: #ffff55;
  border-color: #777722;
}

.badge--succeeded {
  color: #55ffff;
  border-color: #226666;
}

.badge--failed {
  color: #ff5555;
  border-color: #772222;
}

.badge--reclaimed {
  color: #ff55ff;
  border-color: #662266;
}

.badge--cancelled {
  color: var(--text-dim);
  border-color: var(--border);
}

.badge--closed {
  color: #555555;
  border-color: #333333;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 1px 5px;
  font-size: 10px;
  font-weight: 500;
  border: 1px solid currentColor;
}

.tag--deadline {
  color: #ffff55;
  border-color: #777722;
}

/* ── Data grid ──────────────────────────────────────────────── */
.escrow-card__data {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px 16px;
}

.data-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.data-item__label {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.data-item__value {
  font-size: 12px;
  color: var(--text);
  word-break: break-all;
}

.data-item__value--muted {
  color: var(--text-muted);
}

.data-item__value--accent {
  color: var(--text);
  font-weight: 500;
}

/* ── Card actions ───────────────────────────────────────────── */
.escrow-card__actions {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 110px;
}

.escrow-card__copy-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 11px;
  font-family: var(--font);
  padding: 4px 0;
  cursor: pointer;
  text-align: right;
  transition: color var(--transition);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  margin-top: 4px;
}

.escrow-card__copy-btn:hover {
  color: var(--text-muted);
}

/* ── Modal ──────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .75);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms ease;
}

.modal-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border-2);
  width: 100%;
  max-width: 420px;
  transform: translateY(6px);
  transition: transform 150ms ease;
}

.modal-overlay.is-open .modal {
  transform: translateY(0);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}

.modal__title {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.modal__close {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 16px;
  font-family: var(--font);
  padding: 0;
  cursor: pointer;
  line-height: 1;
  transition: color var(--transition);
}

.modal__close:hover {
  color: var(--text-muted);
}

/* ── Form ───────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 16px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.form-hint {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 3px;
  line-height: 1.5;
}

.form-input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 8px 10px;
  font-size: 12px;
  font-family: var(--font);
  color: var(--text);
  width: 100%;
  transition: border-color var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: rgba(245, 240, 232, .4);
}

.form-input::placeholder {
  color: var(--text-dim);
}

input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  filter: invert(0.4);
  cursor: pointer;
}

.form-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ── Share box ──────────────────────────────────────────────── */
.share-box {
  background: var(--surface-2);
  border: 1px solid rgba(245, 240, 232, .15);
  padding: 12px 14px;
  margin-top: 14px;
}

.share-box__label {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.share-box__url {
  font-size: 11px;
  color: var(--text-muted);
  word-break: break-all;
  line-height: 1.6;
  margin-bottom: 10px;
}

.share-box__copy {
  background: transparent;
  border: 1px solid rgba(245, 240, 232, .25);
  color: var(--accent);
  font-size: 11px;
  font-family: var(--font);
  padding: 4px 10px;
  cursor: pointer;
  transition: background var(--transition);
}

.share-box__copy:hover {
  background: rgba(245, 240, 232, .04);
}

/* ── Toast ──────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 340px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border-2);
  padding: 10px 12px;
}

.toast--success {
  border-left: 2px solid #55ff55;
}

.toast--error {
  border-left: 2px solid #ff5555;
}

.toast--info {
  border-left: 2px solid #5555ff;
}

.toast__icon {
  font-size: 12px;
  flex-shrink: 0;
  line-height: 1.6;
  color: var(--text-dim);
}

.toast__body {
  flex: 1;
}

.toast__title {
  font-size: 12px;
  font-weight: 500;
  color: var(--text);
}

.toast__msg {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
  line-height: 1.5;
}

/* ── Spinner ────────────────────────────────────────────────── */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.spinner {
  width: 14px;
  height: 14px;
  border: 1px solid var(--border-2);
  border-top-color: var(--text-muted);
  border-radius: 50%;
  animation: spin 600ms linear infinite;
  flex-shrink: 0;
}

[hidden] {
  display: none !important;
}

.connected-state {}

/* ── Student Accept Page ────────────────────────────────────── */
.accept-shell {
  max-width: 480px;
  margin: 0 auto;
  padding-top: 20px;
}

.accept-card {
  background: var(--surface);
  border: 1px solid var(--border);
}

.accept-card__header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.accept-card__icon {
  font-size: 20px;
  color: var(--text-muted);
  line-height: 1;
  flex-shrink: 0;
}

.accept-card__title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

.accept-card__sub {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

.terms-box {
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  padding: 14px 16px;
}

.terms-box__label {
  font-size: 10px;
  color: var(--text-dim);
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.terms-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.terms-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.terms-item__label {
  font-size: 10px;
  color: var(--text-dim);
}

.terms-item__value {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

.terms-item__value--mono {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

.stake-form {
  padding: 16px;
}

.stake-form__title {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.stake-form__hint {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 16px;
}

.asset-picker {
  display: flex;
  gap: 4px;
}

.asset-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}

.asset-btn:hover {
  border-color: var(--border-2);
  color: var(--text);
}

.asset-btn--selected {
  border-color: rgba(245, 240, 232, .4);
  color: var(--accent);
  background: rgba(245, 240, 232, .04);
}

.asset-btn__icon {
  font-size: 13px;
}

.amount-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.amount-input {
  padding-right: 52px;
}

.amount-unit {
  position: absolute;
  right: 10px;
  font-size: 11px;
  color: var(--text-muted);
  pointer-events: none;
  letter-spacing: 0.5px;
}

.success-details {
  margin-top: 16px;
  border: 1px solid rgba(245, 240, 232, .15);
  padding: 12px 14px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.8;
  text-align: left;
  max-width: 400px;
  background: transparent;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 600px) {
  .header {
    padding: 0 14px;
  }

  .main {
    padding: 16px 14px 48px;
  }

  .escrow-card {
    grid-template-columns: 1fr;
  }

  .escrow-card__actions {
    flex-direction: row;
    flex-wrap: wrap;
    min-width: unset;
  }

  .toolbar {
    flex-wrap: wrap;
    gap: 10px;
  }

  .terms-row {
    grid-template-columns: 1fr;
  }
}